DETECTION SYSTEM FOR COMPONENT IDENTIFIERS IN A TELECOMMUNICATION SYSTEM

Abstract: System for detecting the identifier of a component of a telecommunication system such as a terminal component, transmission component or switching component. The system comprises a detector (2) which is connected to the component (3), furthermore a remitter (4) which is connected to a second component (5). The detector dials the second component, and the telecommunication system transmits the identifier of the first component to the remitter ("calling number display" service). The remitter sends the identifier of the first component back to the detector, where the requested identifier can be read out on a display. To summarize, relatively large savings are obtained by only one operator instead of two necessary for testing; time gained in the event of malfunctions; direct and undistorted data exchange; recording of the data on a printer possible; fits into a system for guaranteeing quality; increases the performance of the telecommunication system; avoids unnecessary investment in cable/bundle/channel capacity.

Description: Title: Detection system for component identifiers in a telecommunication system A. BACKGROUND OF THE INVENTION The invention relates to a system for detecting the identifier of a component in a telecommunication system, such as a terminal component, transmission component or switching component. The invention also relates to a remitter and a detector which are eminently suitable for and intended for the said system. Telecommunication networks, for example telephony networks, comprise large numbers of cable cores, of which a large proportion is allocated to subscribers (subscriber connections). For all the cable cores (lines), it is necessary to record administratively how they have been allocated. In addition to new allocations, it is also necessary to register the lines which become free again, for example, by the discontinuation of allocations. In order to maximize the quality of the services provided, for example in making new connections, and to minimize the costs due to overcapacity, it is desirable to be able to compare the actual line occupation with the administrative information at certain times. According to current practice, a first operator connects a ('hand-held') telephone set to the network, for example at a test point in a cable distribution box, after which said operator rings a second operator who is connected to a telephone number which has been cleared for 'calling number display'. The second operator can consequently see the identifier of the line from which ringing is taking place and communicates the latter, via the same or another connection, to the first operator. The latter can then see whether the administrated identifier corresponds to the identifier detected in this way. In this way it may also be found that a line has become free which is still allocated 'on paper' to a subscriber connection or other component. Since the operator at the test point in the network is not in a position to test directly how lines have been allocated, two operators are therefore always necessary to test for continuity in this way, as a result of which the efficiency is not very high, especially when testing large numbers of 'components' (lines) for continuity. B. SUMMARY OF THE INVENTION The invention is based on the insight that, in the procedure described above, the unknown identifier is sent to a component having a 'calling number display' facility and said component, or an auxiliary component connected thereto, does not need to do anything more than reflect the 'calling number identifier'. The invention thus comprises a system for detecting the identifier of a first component of a telecommunication system such as a terminal component, transmission component or switching component, which is characterized by a detector which is connected directly or via the telecommunication system to the first component, and also a remitter which is connected to a second component or comprises a second component, and said detector dials the second component, the telecommunication system transmits the identifier of the first component to the remitter and the remitter sends back to the detector, via the same or another telecommunication system, the identifier of the first component. As a result of the use of a remitter which sends back to the detector automatically, without the intervention of a second operator, the 'calling number identifier' of the line to which the 'hand-held' detector is connected, it is possible to investigate extremely rapidly and reliably the line identifier (or identifier of another type of network component; which is being dealt with from any point in the network. In this way, a large saving can be made which may amount to millions per year. On the one hand, the administrative data relating to the occupation of the cable cores etc. can be adapted efficiently in this way to the actual situation, while, on the other hand, whenever changes are made in the network, in particular when new customer connections are made, such changes can be checked, or a check can be made on whether the new customer connection has been made to the correct cable cores. C. EXEMPLARY EMBODIMENTS The invention is illustrated in greater detail with reference to figures 1 , 2 and 3. Fig. 1 shows a telecommunication system in which the system according to the invention can be used. Fig. 2 shows diagrammatically an exemplary embodiment of a remitter which is or may be a part of the system according to the invention. Fig. 3 shows diagrammatically an exemplary embodiment of a detector which is or may be a part of the system according to the invention. Fig. 1 shows a telecommunication system 1 which comprises, inter alia, transmission, switching and terminal components and which serves to make connections between said terminal components making use of a network of transmission and switching components. As terminal components Fig. 1 shows the network connections 3 and 5; all the network connections have a connection number as identifier. It is also possible that terminals (speech, display or data terminals), which are connected or can be connected to the network connections, have their own identifier, with which they can identify themselves with respect to the network or other terminals or subordinate systems. It is also possible for users of the terminals to be able to identify themselves with respect to the network or other users, terminals or systems; the latter is, for example, a development within UPT (universal personal telecommunications). Terminals may be connected to the network via copper cores, optical fibres or via radio channels, while the network itself may also use various media. Situated within the network of Fig. 1 are manipulation or test points 6, for example in the form of cable distribution boxes etc. Connections may also be tested and manipulated in cable junction boxes in which cable cores may be joined to one another or branched. It is important to know, at said points 6, for each core pair, to which network component, for example network connection, said core pair is connected. In order to be able to test this, a detector 2 is connected to such a pair. The latter is capable of making a call at said test point to a certain network connection ('telephone number'). The network connection must have been cleared by the telecommunication system for a facility which is referred to as 'calling number display'. According to the invention, a special terminal, namely a remitter 4, is connected to said network connection. The latter is capable of receiving the 'calling number identifier' transmitted by the network and sending it back to the terminal which initiated the call, or to the detector 2. The latter receives the identifier sent back and can show it on a display so that the operator at the manipulation/test point 6 sees what the identifier of the component is with which he had connected the detector 2. To prevent undesirable situations occurring, the detector 2 identifies itself with respect to the remitter 4 by also sending its own ID and PIN code. In addition, the data transmitted, the ID and PIN code sent by the detector 4 in the outward direction and the component identifier sent back by the remitter 4, are transmitted in encrypted form. Fig. 2 shows diagrammatically an example of the implementation of the detector 2, while Fig. 3 shows diagrammatically an example of the implementation of the remitter 4. Detector 2 comprises an interface 10 with the network (via a connection 7). A call can be emitted by a call generator 12 to the network connection 5 to which remitter 4 is connected via a fork circuit 1 1 ; the identifier (the subscriber number) of the network connection 5 is stored in a detector 2 in a register 13, as a result of which the operator can initiate the call without having to dial (he does not even have to know the number) the subscriber number under which the remitter 4 can be reached. After the connection has been made, a component 14 first sends out a detector identifier, followed by a detector PIN code from a component 15, both identifier and PIN code having first been encrypted in a component 16. Remitter 4 (see Fig. 3) is also provided with a network interface 20 and a fork circuit 21. After detector 2 has obtained a connection to remitter 4, the identifier of the calling detector 2, that is to say the identifier of the line to which the detector 2 is connected via connection 7, is transmitted by the control system of the telecommunication system. If the manipulation/test point 6 is a local cable connection box, the 'component identifier' is therefore the identifier of the network connection 3, in other words, the 'subscriber number' of subscriber 8. Said identifier, which the telecommunication system offers to the called remitter on the basis of the 'calling number display', is not sent back immediately but only after the detector has first sent his detector identifier and PIN code, which are verified by a component 24 using a register 25. If that verification is positive, an enable component 26 is activated and the detector identifier, the requested component identifier (of the component 3 to which the detector 2 is connected) and date and time are sent to a printer 27. Only after the detector identifier and the identifier of connection 3 to be sent back have been received in the printing buffer of printer 27 (the printout serves for possible later verification or production of proof), is the requested component identifier (which is allowed through by an enable component 28 activated by the printer) sent back by a transmitter 30 after having been encrypted in a component 29. Detector 2 thus receives the requested, a priori unknown component identifier which is fed to a display 19 via a receiver 17 after having been decrypted in a component 18. Through the system according to the invention, relatively large savings and quality improvement can be achieved which are primarily the consequence of the very large number of lines and other components in a (public) telecommunication system having many subscribers, both business and private, and the large number of changes which are the consequence thereof. Appreciable time can also be gained in the elimination of malfunctions such as those which are the consequence of digging through telecommunication cables, for example during building operations etc. To summarize, savings can be achieved by: only one operator instead of two necessary for testing; - time gained in the event of malfunctions; direct and undistorted data exchange; recording of the data on a printer possible; fits into a system for guaranteeing quality; increases the performance of the telecommunication system; - avoids unnecessary investment in cable/bundle/ channel capacity. Finally a section of the output of the printer 27 is shown in the table. In the latter the 'SER. NO.' represents the detector identifier (with which the detector 2 thus identifies itself with respect to the remitter 4), and 'CALL NO.' represents the a priori unknown component identifier, in this case subscriber connection number. Furthermore, the date and time of the test are shown. An impression of the speed with which a large number of connections can be tested can be obtained from the consecutively recorded times. The test time is determined essentially by the speed with which the detector 2 is connected to consecutive subscriber connections via connection 7. However, it is possible, in principle, to accelerate the 'plug changing' if, at the manipulation/test point 6, all the connections are or have been connected to a type of 'scanner' which consecutively makes contact with the various connection points. Such a scanner can be driven by the detector 2, the scanner thus always 'stepping' one connection point on after the a priori unknown identifier has been received back via the remitter 4. In this connection, the display may optionally be replaced by or expanded with a small printer which shows the consecutive test results. However, the output of the printer will completely coincide with the output of the printer at the remitter so that the system according to the invention could be controlled completely from the remitter end, that is to say centrally, and the data relating to the actual occupation of the cables etc. could be collected centrally. Finally, it is pointed out that it is also possible to test the continuity of subscriber lines, for example, with the aid of two detectors, one of which sends its ID code to the other, which ID code is detected by the other if both are connected to the same subscriber line. In this way, as a departure from the above, where one detector cooperates with a remitter, two detectors can be used, for example, to test the continuity of core pairs which are not connected either to a subscriber or to an exchange. The design of the detectors virtually needs no modification for this option. D. REFERENCES None

Claims: E. CLAIMS 1. System for detecting the identifier of a first component of a telecommunication system such as a terminal component, transmission component or switching component, characterized by a detector (2) which is connected directly or via the telecommunication system ( 1 ) to the first component (3), and also by a remitter (4) which is connected to a second component (5) or comprises a second component, and said detector dials the second component, the telecommunication system transmits the identifier of the first component to the remitter and the remitter sends back to the detector, via the same or another telecommunication system, the identifier of the first component. 2. Remitter for detecting, in cooperation with a detector in a telecommunication system, the identifier of a first component of said telecommunication system such as a terminal component, transmission component or switching component, which remitter is or can be connected to a second component of the telecommunication system or comprises such a second component, characterized in that, if the remitter is called via the second component by a calling component (2) connected to the first component and the telecommunication system transmits under these circumstances the identifier of the first component to the remitter, the remitter sends back to said calling component, via the same or another telecommunication system, the identifier of the first component. 3. Remitter according to Claim 2, characterized by a receiver (22) for receiving, via the second component, an identifier, transmitted by the telecommunication system, of the first component and a transmitter (30) for sending back the identifier of the first component to the calling component. 4. Remitter according to Claim 2, characterized by means for carrying out a verification protocol with the calling component. 5. Remitter according to Claim 4, characterized by means (24, 25) for verifying one or more received identifiers of the calling component with identifiers recorded in the remitter and only sending back the identifier of the first component if the received identifiers and the recorded identifiers correspond. 6. Remitter according to Claim 2, characterized by means (29) for encrypting the identifier of the first component to be sent back. 7. Detector for detecting, in cooperation with a remitter according to Claim 2 in a telecommunication system, the identifier of a first component of said telecommunication system such as a terminal component, transmission component or switching component, which detector is connected directly or via the telecommunication system to said first component, characterized by a calling component ( 12) for making a call to the remitter, and a component (19) for displaying the identifier, sent back by the remitter, of the first component. 8. Detector according to Claim 7, characterized by means for carrying out a verification protocol with the remitter. 9. Detector according to Claim 7, characterized by means (18) for decrypting the received identifier of the first component. 10. Detector for testing, together with a second, identical detector, the continuity of core pairs etc., one detector sending an ID code to the other detector from an ID code generator, and said ID code being received in said other detector by an ID code receiver and verified by verification means to check whether it originates or does not originate from the detector first mentioned.

Inventors: IJKELENSTAM EVERT PIETER, SHARMA ARVIND, IJKELENSTAM, EVERT, PIETER, SHARMA, ARVIND
Applicants: IJKELENSTAM EVERT PIETER, NEDERLAND PTT, SHARMA ARVIND, VITRONIC HOLDING BV, IJKELENSTAM, EVERT, PIETER, KONINKLIJKE PTT NEDERLAND N.V., SHARMA, ARVIND, VITRONIC HOLDING B.V.
Application year: 1994
Main classification: H04M3
IPC codes: H04M1, H04M3